The embodiment of the invention discloses a heart sound signal analysis method. The method includes the steps that acquired heart sound signals are preprocessed to obtain envelop heart sound signals, then the envelop signals are subjected to quantization coding and segmented processing to obtain a heart sound image matrix of the heart sound signals, a heart sound image map of RGB color space is established according to the heart sound image matrix, characteristic parameters capable of reflecting heart physiological information and pathological information are extracted from the heart sound image map, and the heart status of a person to be tested is evaluated through the characteristic parameters and the color change of the heart sound image map. The intensity of heart sound is represented through the brightness of colors, the change of the heart sound signals is represented through the change of the colors, and the method is convenient, brief, visual and easy to understand. The influence of pulse type noise is effectively eliminated, and the accuracy of whole heart sound analysis is improved. In addition, the embodiment of the invention provides a corresponding implementation device and system. Furthermore, the method has higher practicality, and the device and system have corresponding advantages.